Type-writing machine.



No. 887,083. PATENTED MAY 12, 1908.

A. FUHLENDORF & J. GROTHB.

TYPE WRITING MACHINE.

APPLICATION FILED MAR. 26, '1907.

2 SHEETS-SHEET 1.

- WITNESSES No. 887,083. PATBNTED MAY 12, 1908. A. PUHLENDORF & J'. GROTHE.

TYPE WRITING MACHINE.

APPLIOATION FILED MAR. 28, 1901.

2 SHEETS-SHEET 2.

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ATTORNEY WITNESSES operative to UNlTED sm ng PATENT OFFICE.

ADOLPH FUHLENDORF AND JACOB GRCTHE, OF NEW YORK, N. Y.

TYPE-WRITING MACHINE.

Application filed March .26,

Patented May 12, 1908.

1907. Serial No. 364,654;

which the following is a specification.

The present invention relatesto typewriting machines and has especial reference to means for preventing a feeding movement of the typewriter'oarriage after certain predetermined keys (calledsilent or accent keys) have been operated.

The purpose of the invention is to enable a plurality of characters to be printed in the same vertical alinement and to avoid the necessity of retracting the carriage after the first of these characters has been printed.

- The invention is particularly applicable to the Oliver and. similar types of ty ewriting machines, whereinan escapement r evice co o erates with an escapement rack on the carriage for-permitting a feeding movement of the latter.

Stated in general'terms, the invention consists in providing mechanism Whichbecomes prevent a feeding movement of the carriage when any predetermined character has been struck. This mechanism includes a member which may be projected into the path of, or into contact with the escapement dog or its equivalent and prevents from the escapement pinion when a silent or accent key has been struck.

As shown in the accompanying drawing, the escapementdog when operated through the medium of our present invention 18 acted upon by two forces, the one being the action the universal bar which tends to and does raise the do to a other being the member of our improved device which is projected into the path of travel of the dog, and contacts with the same to prevent the latter from com leting its travel, and thus from being entire y released from the'escapement pinion.

While under ordinary circumstances, two opposing forces operating in this manner would have the effect of preventing action of any kind in the dog we would point out that this is not the resu t of our invention, inasmuch as the dog is raised sufficiently to ermit the universal bar to operate the rib on vibrator, and there is anamount of lost niocertain extent, 'and the tion at the point where the type bars are pivoted to theupright links to permit the type to print even thou h the esoapement dog is stopped in its trave short of its release from the escapement pinion.

In the accompanyingdrawings. we have illustrated the invention as applied to one of the well-known makes of typewriters, and it will be apparent that the invention may be applied withoutdifiiculty to other nnichines havin similar carriage feeding mechanism.

In t 1e drawings: Figure 1 is a vertical longitudinal section through a machine equip ped.

-tion and showing the parts'in their normal posit-ion before a key is depressed. Fig. '2 is a fragmentary View in the planeof Fig. '1 showing the relation of the parts after the depressionof a key to which the device forming the resent invention is connected. Fig. 3 is a ragmentary view in front elevation with the parts shown in normal position;

eferring to the drawings, -the reference character 1' designates the main frame of the machine and 2 designates the carriage. The platen 3 is mounted on the carriage in the usual way and ty iebars 4 are mounted above the carriage in a hank.

The type keys are designated 5 and the links connecting the keys and type bars are designated 6. The carriage is an vanced by the usual spring (not shown) held in the spring drum Z and its advance is controlled bya rotary esca ement mechanism of well- -known design. his esoapement mechanism comprises a rack 7 mounted on the'carriage, a pinion 8 engaging the rack, a second pinion 9 mounted on a shaft 10 which carries the inion 8 and a dog 11 which cooperates with the pinion 9. The dog 11 is hinged at the lower end of a hanger l2 and both the hangerframe 16 is supported by a spring 20 and the lever 14 is normally held in the ositionshown in Fig. 1, the dog 1] eXten mg between two of the teeth on the pinion 9. The tension of the spring or other agency,used to advance the carriage tends to rotate the lpinion 8 through t e enga ement of that l' pinion with the rack 7 on the carriage and with the device forming the present mvendog this rotating tendency is imparted through the shaft to the pinion 9. As long, how ever, as the dog 11 extends betweenthe teeth of the pinion 9 no turning movement ofthat" inion can take place and the carriage will be heldstationary. Wheinhowever, oneofthe keys -5 is depressed the corres onding key lever'19 depresses the universe bar 18 and the frame upon which it is mounted. This depression of the frame 16, rocks the lever '14 and raises the dog 11. The'upward move- 'ment of the dog 11 sufficient, if'not impeded, to cause it to clear the pinion 9, which turns until the tooth previously engaged by the f dog 11' strikes against a shoulder 21 formed on the lever 13 behind and below the and the pinion is partially turned, as stated,

the springs withwhich the dog 11 and hanger 9 are provided act to advance the dog beyond the tooth on the pinion 9 previously engaged by the dog. So, when pressure is removed I from the type key and the lever 14 returns to that type bar.

the normal position shown-in Fig, 1 the dog 11 engages with the next tooth on the pinion 9-. Such tooth on the pinion 9 corresponds to a single, character space, the carriageof the machine is automatically advanceda single space after each printing 0 eration, if the dog 11 is allowed 'to clear t e escapement pinion 9'when the type key is depressed.

I At 22 we have illustrated .a type bar,bearing three characters which are never rinted in the samehorizontal line with the ietters,

-namely two accent marksand an underscore.

These characters are always written either above or below some other character In the line. Consequently it isdesirable that the key 5 which actu ates the type-bar 4* carrying these characters should be associated with some device for preventing the advance of the carriage after a printing movement of To accomplish this end,. we provide a small bellcrank lever 23jwhich is so mounted that it normally occupies the position shown in Fig. 1, being held in that osition by means vof a s ring 24., At its orward extremity the bel -crank 23 is rovided with a lug 25 which rests upon the s iort arm of a bent lever 26, the longarm ofwhich is connected by means of a stirrup 27 with thelever 19 bearing the key 5*. When the key 5 is depressed the bent lever 26 is moved into the position shown in Fig-.2 and the bellcrank lever23' is rocked against the tension of spring 24 into such position that a lug 28 on the descending arm of the bell-crank is brought over a boss on the bracket or arm 13 which carries the hanger '12 and dog 11. The jlug 28 on the bell-crank acts as a stop to arrest the upward movement of the bracket or arm 13 andprevents the dog 11 from clearing the pinion 9;

Consequently, after the printing movement of the type bar 4* the lever 14 returns to its normal position without any WVhen the dog 1.1, clears the pinion 9 I typelever is operated.

disengagement of the dog and pinion 9,

thus preventing any adva'nce of the carriage after the )rinting operation and ermitting another-c aracter to be printed efore the carriage advances.

While we have shown the lever 26 con nected with the'key corresponding to certain characters, it is obvious that the lever 26 may be connected with other keys'if it is desired to prevent movement of the carriage after printing the characterscontrolled thereby and it isalso obvious that the key 5 to which the lever 26 is connected may not be associated with any type bar, but may be de ressed H simultaneousl with anykey upon 't e'. keyboard of the mach'ine',if so desired. If it is desired to permit the carriage to befedforward afterthe key 5 is depressed, this,pur-

pose may be accomplished by simply'freeing the stirrup 27 this key, thus causing the dog 1 1 to operate 'in its normal manner, without interference. from the attachment herein described.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is: v T

7 1. In a ty ewriting machine of thecharacter describe the combination with ty 'e' levers of a universal bar operable there 3y, a 1

carriage provided'with' an escapement rack,

an eseapement pinion in mesh with the rack, an escapement dog normally'des gned to per mit a feeding movement of the carriage upon operation of theuniversal bar, and means to prevent a feeding movement of the carriage upon the operatlon of certainty e' levers, said means comprisinga' bellcrank lever hav-' ing an extension designed to be projected into the, path of the dog and permit but partial. actuation thereof when apredeterm ned andmeans operable upon depression of redeterrnined type levers to prevent com ete disengagement of the escapement do om its pinion, said means comprisinga bellcrank lever pivoted overvthe escapement dog, and having an extension which is adapted to be depressed into contact-with the .dog upon operation of predetermined type levers.

In a ty ewriting machine of the charac ter describe ,the'combination with ty e levers, of a universal bar operable there y, a, carriage provided wltha'n esca'pement rack,

escapement mechanism, cooperating with said escapement rack, an. escapementdog normally engaging the escapernent mechanism and operable by the universal bar to release the same from the escapement mechanism and permit a feeding movement of the carriage, and means to prevent a feeding movement of the carriage upon operation of the universal bar by predetermined type levers, said means comprising a bell crank lever having an extenslon projecting over the esca ement dog, and a link extending from the ell crank lever to a type lever, whereby when the latter is depressed to operate the universal bar the. bell crank lever is rocked and caused to project its extension over the esca ement dog and prevent disengagement of t e latter from the escapement mechan- 4', ha ty' .ewriting machine of the character describe the combination with ty e levers, of a'universal bar operable there y, ,a

carriage; escapement mechanism an escapement dog normally in engagement with the escapement mechamsm and operable by the universal bar to be released fromthe escapeying over the esca ement dog, a s

normally holding t e lever out o contact W -ment mechanism'to permit'a feeding move-.

ment of the carriage, andm'eans operable upon the depression of predetermined type 6 levers to prevent a feeding movement oft carriage when the universal bar is operated by the said ty e levers "and itself operates the escapement pivoted bell crank lever having an extenslon with the dog, and a link connection extending from the bell crank lever toa predetercarriage Wh escape-ment ivoted bell crank lever havlngan extension normally 0g, said means comprising a ring for mined type lever by means of which the bell crank lever, upon ver, may be rocked into contact with t capement dog.

p 5. In a ty ewritlng machine of the character describe the combination with ty e le-. vers, of a universal bar operable there y, a carriage, escapement mechanism, an escapement dog normally in engagement with the depression of the type lee es- .escapement mechanism and operable by the crank lever, and a stirrup connected to said link and to one of said type levers, whereby upon depression of the latter the bell cran lever/may be rocked into contact with the esca ement dog.

- n testimony whereof we have affixed our SlQIlfiatlllGSjILPlfGSGIICG of two witnesses.

ADQLPH FUHLENDORF. "JACOB GBOTHE.

itn esses I CLA'aissA FRANCE, BLANCHE GALLAGHER. 

